Undersea habitat plan

Japanese: 海底居住計画 - かいていきょじゅうけいかく
Undersea habitat plan

...However, in Japan, the amount of land space available for use is limited, so efforts are being made to realize what is necessary, one by one, based on social needs and economic efficiency.
[Undersea habitat project]
When a person dives underwater to work, the pressure of the air or gas mixture they breathe is equal to the pressure at that depth, so gas dissolves in the body. When they finish working and return to the surface, the pressure decreases, so the gas dissolved in the body is expelled, but if the pressure is reduced too quickly, the nitrogen bubbles up and cause many damage to the body (decompression sickness).

*Some of the terms mentioned in the "Undersea Habitat Plan" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…しかし日本では陸上の利用面積が狭隘であるため,社会的ニーズと経済性からみて逐次必要なものから実現していこうと努力されている。
[海底居住計画]
 人間が海中にダイブして作業をする場合,呼吸する空気あるいは混合気の圧力はその水深に相当する圧力に等しいので,人体中にガスが溶けこむ。作業が済んで海面に浮上するとき,圧力が減少するため人体中に溶けているガスは体外に排出されるが,減圧を急速に行うと窒素は気泡となり体に多くの障害を与える(減圧症)。…

※「海底居住計画」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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